Percolator top



ay 21, 1935. E. P. sEGHER PERCOLATOR TOP Filed Dec. 8, 1930 2 Sheets-Sheet l zlwl V May 21, 1935.

E. P. SEGHERS PERCOLATOR TOP Filed Dec. 8, 1930 2 Sheets-Sheet 2 Patented May 21, 1935 UNITED s m'res PATENT orrlac I 2,002,355 y PERCOLATOR. TOP

lilmiel P. Segheraf Chicago, Ill. Application December 8', 1930, SerialNo; 500,712

My 'presen 44 Claims. t invention relates to percolator covers comprising a lid and top, andparticularly to the means for holding the percolator top within the opening in thelid of a coliee percolator or' thelike.

expand and without permittingthe opening.

Another ob One object of this invention is to contract relatively to each other top to become loose in said ject of this invention is to prevent rotation of the top-within the opening in the lid. The reason for doing this is so that; the top will not rotate into such a position that the same may be removed from the lid as ordinarily percolator tops must be separable from the lid in some manner in order that the same may be replaced when of glass and desired. Percolator tops are made crack, quite readily, thereby .necessitating replacement at frequent intervals.

Another object of" this invention is to provide. a percolator top adapted to be used with an im-" proved form of percolator lid to get improved results, but which. at the same. time is capable market Witho lid;

of being used with percolator lids now on the ut necessitating any changes in the.

More specifically my invention contemplates using resilient means for holding the percolator top within the opening in the lid, the resilient means also preventing rotation ofthe. top. within.

the lid.

invention is equally applicable to percolator.

lids provided with 2. depending flange surrounding the opening therein, or withlids having no depending flange. The former. style of percolator.

lid' is commonly used on aluminum percolators.

whereas the enameled per M Other objects of this invention will appear hereinafter a the novel combinations and arrangement of thevarious parts being clearly set forth.-.-in the latter. form is used particularly on colators.

s the description thereof proceeds,

colator top showing. the top and. lidin operative relation with Fig. 2 is a section taken substantially along' each other;

the line 22 of Fig. 1;

Fig. 3' is a of my invention employing an insertable ring adapted to be colators;

bottom plan view of a modification used particularly on enameled per- Fig. 45 is a section taken along the line 4& of

Fig. 5 isafragmentary perspective view of" a portion of the top showing my improved form of lug and the end portion of the spring which is adapted toco-operate therewith;

Fig. 6 is an enlarged elevational View of a portion of the depending flange or apron on the top showing the improved form of lugs usedthereon;

Fig. 7 is a perspective view of the spring clip shown in Figs. 1 and 2;

Fig. 8 shows a section through a lid of ordinary constructionwith a top accordingto my invention and a retaining ring adapted to hold the top: and 15" 7 lid in'properrel'ation toeach other;

Fig. 9 -is a section taken substantially along" the 1 line 9-9 of Fig. 8 showing the bayonet slot in the flange on the lid and a; corresponding depression in the retaining-ring; r f

-Fig;. 10 an elevational' view of a still further modification of my invention, parts being broken away to better illustrate this form of the invention;

ofFig. 1'0;

Fig. 12 is a section taken along the-line |'2-|2 of Fig. 10;

Fig; 13 is a viewshowing a modified form of the lug shown in Figs. 10 and 12;.

Fig. 14 shows a still further modification of the lug'shown in Figs. 10- and 12-; s

Fig. 15 is a section taken along the line |5-l5 of Fig. 14;

Fig; 16-is a bottom plan view of Fig. 14;

Fig. 17is a bottom plan view of a still further modification of my invention;

Fig. 18 is a section taken along the line I 8- 8 of Fig; 17;

Fig. 19shows a modified form of the invention. showninFig. 18'; and s Fig. 20 shows still another modification of my invention.

The ordinary aluminum percolator lid is constructed substantially as shown in Figs. 1' and 2.

Themain portion of the cover is indicated by the reference numeral I. The coveris provided'with a central opening surrounded by a depending flange 2. This flange may be vertical andiin some cases is vertical. More often however, the flange Fig. 11 is a section taken along the line I l-{H' the latter. The top also has a depending cylindrical apron or flange 5 of substantially cylindrical shape which is ordinarily provided with two projections 5 of substantially semi-spherical shape located at opposite sides of the flange.

The construction so far described is the common construction found in most aluminum percolators now on the market. Means however, must be provided for holding the top in the opening of the lid and yet permit removal of said top from said opening when desired. The ordinary provision made for accomplishing these results, is to provide projection receiving depressions or recesses E in the depending flange 2. These recesses l are ordinarily referred to as bayonet slots. The top is inserted in the lid by arranging the projections 6 in alignment with recesses i and moving the top downwardly into the opening, the recesses permitting the projections 8 to move into a position below the lower edge of the flange'2. Then by rotating the top through substantially 9b" the projections 6 are brought into position beneath portions of the flange 2, which are not provided with the recesses 6. Therefore, upward movement of the top is prevented by the engagement of the projections with the under edge of the flange. In forming the recesses l the ordinary method is to form the flange 2 with the recesses l therein, but when inserting the top 3 into the opening in the lid the pre-formed recesses are disregarded and the tops are forced into the opening by machines so that the projections 6 will themselves form the recesses 'i if the pre-formed recessesand projections do not coincide. It is possible to do this in view of the fact that the lid of the percolator is generally made of relatively thin material which is quite pliable and yields under pressure.

The disadvantages of such a construction are quite numerous and a great many ways have been suggested for overcoming the difliculties which are encountered with the aforesaid construction. Some of the disadvantages are as follows:

In the first place the top and lid are of different materials, namely, glass and metal respectively, and the result is that there is an unequal expansion of these materials, and the expansion of each of these parts occurs generally at different times. As is well known, the coifee is forced against the top partof the inner side of the percolator top and is deflected by the percolator top back onto the coffee which is in a basket arranged in the top of the percolator. Therefore the top is directly engaged by coffee which-is at boiling temperature and the top expands quite .which of course would bev quite undesirable.

When the parts cool down, the top contracts and so does the lid, but since the opening has been made larger by the expansion of the top, the top will no longer flt snugly within the opening even though the same may have fit snugly in the opening when first placed therein.

If the top is loose within the opening, the top will rotate freely and without being apparent to the user of the coffee percolator, the projections 8 will position themselves in time, adjacent therecesses l and when the cover is raised to open position, the top will quite likely fall out of the lid and if it strikes a solid object, will no doubt break as the glass from which these tops are made is quite brittle in View of the fact that they are generally made by die casting. Sometimes the top deforms the flange i to such an extent that the projections 6 may pass the flange without being arranged adjacent the recesses l. The projections t are not ordinarily of more than in heighth and a great many times are not that high. If the knob 8 on the top is grasped when, opening the cover and the top does not fit Within the opening in the lid quite snugly, the projections may pass the flange 2 without much trouble.

Another difflculty with the deformable flange 2 is that the user is quite apt to use the top in the improper manner. For instance in a great many lids the depressions l are not very noticeable and a person will push the top down into the opening in the lid without first locating the projections in the proper position. The result is that additional recesses, such as i are formed about the periphery of the flange 2. If this is done very often, the result is that there is not much of the flange which will prevent the projections from passing out of the opening after the top has been inserted therein.

It is quite obvious that in addition to the aforesaid disadvantages, there is the disadvantage of having a loose top arranged within the opening in the lid thereby causing considerable rattling. Also it has been found that the distance between the projections 6 and the bead t varies considerably, and vertical movement of the top in the opening ordinarily will result.

, Other disadvantages of the ordinary construction will appear as the description of this inven-. tion proceeds.

I will first describe the preferred form of my invention which is shown in Figs. 1, 2, 5, 6 and '1. In this form of the invention, in addition to the projections 6, I provide the wedge-shaped projections 9 on the depending flange or apron 5 of the top 3, with the faces of the wedge-shaped lugs opposed to the bead 2. This projection 9, as best illustrated in Figs. 5 and 6, is substantially a one-half section of a right circular cone. The apex of the conical projection 53 extends upwardly, and terminates approximately near the underside of the projection 6 as'in Fig. 6. It is not necessary that the projection t and projection 9 be arranged in axial alignment with each other, but maybe spaced peripherally with respect to each other. Furthermore the projection 9 may be used by itself although it is preferred to also use the projection 6. In constructing the top, it may even be found desirable to make the projections 6 and 9 so that they merge one into the other with a depressed portion between them as in Figs. 2, 8 and 18.

I wish to have it understood to begin with that inconstructing my invention, I have borne in mind the fact that in order to replace percolator tops which are now on the market, it is necessary that my percolator top be so constructed, at least for a considerable time, so that the same may be used with the usual type of percclatcr lid, as well as with spaced raised portions such as my new and improved type of percolator lid, which is provided with a spring as will appear hereinafter. It will readily be seen therefore that a top with the projection 8 thereon, as well as the projection 9, may be used with the ordinary lid as the ordinary top is also provided with: aeprojectiorr such as the; projection 6. The projection; 6 in my invention. basal, function; corresponding: to: the: ordinary function. of: a. pro:-

jectiona positionedin: this place on a percolator top-.1 Lhat is, it is located near the depending flange. 2: and prevents the. removal of: the, top: vertically." out of the opening when: the, projecticns havebeen rotated: out of registration. with tops.

the recesses. 1.

It has; also been. borne: in mind; in making my invention. that my; improved form. of percolator lid must be capable of using the ordinary type of percolator top in emergency. Therefore, with these objects in mind I have provided. an improved percolator cover which has a lid capable of. using the. ordinary style of percolator top and have also provided. a percolator top which may be used with the ordinary style of percolator lid.

i To the underside of the cover I, at diametrically opposed points thereon, I fasten the springs or resilient fingers ill by means of. the rivets H.

These springs have a cross-section substantially as shown in Fig. 2. It will be noted that this cross-section is such that there is a portion ll. intermediate the free end of the spring, and that end which is against the cover, which will. permit the passage of the projections 6 thereunder so a as not to interfere with the rotation of the top 3. It is not very practicable to provide springswhich will engage the projections 6 so as to prevent rotation of the top within the opening in view of the fact that the projections 8' arearranged in closeproximity to the flange 2 and the result would be that one could not obtain very much of a spring action because the spring would abut against the flange and when deformation of the flange occurred by expansion of the top- 3, then the usefulness of the spring would be practically destroyed. Accordingly I provide a rather long spring having a notch [2 formed inthe outer free end thereof and this notch is adapted to receive the projection 9 so that the portions of the spring on opposite sides of the notch'lz will rest against opposite sides of'the projection and prevent rotation;

Due to the length of the spring, there is not as much angular flexing oi the spring as is necessary with a shorter spring and therefore by having the spring engage a projection remote from the cover, there is less tendency for the springto break down due to the fatigue of the metal. Furthermore if for any reason the springs are deformed permanently in a direction outwardly from the top, a person may readily re-position the springs in their former shape by engaging the outer sides of the springs with a blunt instrumentor with the fingers and exerting a pressure towards the axis of the opening. This is not possible with short springs in View of the fact that substantially all of the effective portion of a short spring made to engage projections such as the projections 6 must respectfullyabutagainst the flange 2. Furthermore, with a short spring there is more angular bending, and fatigue of the metal occurs more quickly.

Due to the conical surface on the projection 9 it is quite immaterial whether there is a diif'erencein the spacing of the projection 9' on various It is quite to be expected that the projections Swill not all beat the same distancefrom the bead 4*. Due to t'he'resilient action oil the spring however; if the projection closeto' the bead 4. the spring will" ride on the projection 9 near vthe bottom thereof; whereas if the proj'ec tion; is; farther. awayifromithe bead l the; spring: will, ride: against" the upper' portion. of; the. pro- J'Bctiom 9;. I.

It there isa'anlexpansion in avertical direction of the: top 3,. then of course, the ends of; the springs. will ride over the surfaces of. the: pro.- jections. 9 and while holding: the. top: flrmlywitb in: the opening,.it:will be found thatthe expansion. of the top and. lidirelatively. to each other. is: not interfered: with. r

If the opening in the lid becomes large, dueto the expansion. of; the top. 3; or if thereis-Ia difference between thesize of the opening andthe outer periphery of the flange 5, the springswill prevent lateral: movement of the topiwithin the. opening as effectively as they would if the flange and opening fit snugly withrespect toeach other.

Due to the die castingiof the. top, there remains a small flange or-fin. l3; which is left at the lower edge of the projection 9. as illustrated in the en-- larged View shown in Fig. 6. This fin acts as a stop shoulder against which the endof the spring abuts in the event that the projection 6'? is-per-' mitteduto pass the flange 2, or in the eventthat there is no projection such as the projection 61 With this arrangement it is assured that the top cannot be removed from the lid without moving theendsoi the spring over the fin l3.

It must be borne in mind' that the flange or apron 5 can only be made of a limited depth in view ofthe fact that thebasket which holdsthe coffee has the top portion thereof insubstantially the same plane asthe lower edge of thetop when the cover is closed: By placing the projection 9 at the lowermost portion of the flange 5;. a maximum utilization is: made of the space between the lid and the top: of the basket.

Due to the length of the springs,- an small amount of lateral deflection thereof is permitted sothat if the projections S are notdiametrically' opposed, then the springsmay yield slightly to one side or. the other so thatthe projections will" be properly received within the notches: I22.

Itisnot necessary to use two projections andv two springs as it has been found that a single projection and a single spring will sufiice to holdathe top in the opening. It is preferred however, to

have the two projectionsand'the twosprings and' more if desired. If the diamet'erof the flange 5 is smaller than contemplated, the ordinary re- 2, 6 and 7 that the outer free endiof the spring isprovidedwith angularly bent portions. I 4 which form wings-or cam surfaces which permit the spring to ride up over the projection 9 when'the percolator top is'rotated to position the projection 9 in proper relation with the spring I0;

Instead of arranging the projections F and 5 in alignment with each other, the same may be spaced from each other in a peripheral direction as in Fig. 20, or at any other desired angle. With such a constructionhowever, it is necessary to provide four recesses such as the recesses T. The additional recesses may be formed merely by forcing the top against the flange z, the same as when the cover is being made.

In Figs'. 3 and 4, I have shown a modifiedform P of my invention which" is particularly adapted to porcelain or enameled percolator lids. In this construction I provide a ring lfi having thebayonet slot I5 and depending spring fingers I1. The ring portion J5 has a circumferential recess which receives the. edge l8 of the porcelain cover l9. Porcelain and enameled covers ordinarily do not have a depending flange. The ring l5 may be snapped into place in the ordinary percolator cover for this type of percolator, then the springs expand and the bayonet recess 5 enters the bayonet recess in the cover thereby preventing rotation of the ring. The springs 11 are notched as at H! the same as are the springs 10 and cooperate with the projections 9 in the same manner as in Figs. 1 and 2.

In Figs. 8 and 9, I have shown a construction which enables me to adapt my invention to the ordinary percolator lid so as to secure the benefits of my invention without changing the construction of the ordinary percolator lid. In this form of the invention, the cover I is constructed the same as in Figs. 1 and 2, and the top 3 is also constructed the same asin Figs. 1 and 2. A ring 20 formed by rolling a piece of metal about itself has a bayonet slot 2| therein, similar to the bayonet slot 16 of ring 15 in Fig. 4 so that when the ring is placed beneath or around the flange 2, the ring is prevented from rotating with respect to the flange while at the same time not interfering with the passage of the projections 6 into the opening. The ring need not be continuous but may be formed as a split ring, the opposed ends being later secured together or not as may be desired. At diametrically spaced points about the ring 20, I provide the spring fingers 2! which act in a manner and are constructed similar to the spring fingers iii and H in Figs; 1, 2, Sand 4.

Figs. 10, 11 and 12 illustrate a form of my invention shown in Figs. 13, 14, 15 and 16 of my application Serial No. 292,278 filed July 12, 1928. The only substantial difference between the form of the invention shown in Figs. 10, 11 and 12 of this application, and Figs.'13, 14, 15 and 16 of Serial No. 292,278 is in the form of the spring which is used, the spring being shaped so as to co-operate with the projection, such as the projection 9, as well as the projection shown in Figs. 10, '11 and 12.

I In this form of the invention, the top 22 is provided with a depending flange or apron 23 formed with diametrically opposed projections thereon. Each projection has a depression or recess, the vertical side portions 24 substantially V-shaped in cross-section as best illustrated in Fig. 12, and a bottom portion 25 which is beveled as best illustrated in Fig. 11. The spring 26 formed-in a manner similar to the spring 19, has the end thereof engaging the lower beveled surface 25, and the edges of the spring engage the vertical portions 24, so as to prevent rotation of the percolator top within the opening. Withdrawal of the top from the opening is prevented by the upper ends of the vertical portions 24 which terminate just below the lower edge of the flange 2, and serve the same purpose as do the projections 6 although they accomplish their result in a more effective manner due to the horizontal upper surfaces thereon. The operation of this device is quite obvious.

The top shown in Fig. 13 has a projection thereon formed similar to the projection shown in Fig. 12, but the depression 2'! in the projection is substantially spherical instead of being flat at the bottom and tapered at the sides as in Fig. 12. The walls of the depression 21, namely, the walls 24'. and 25' correspond to the walls 24 and 25in Figs. 10, '11 and 12, and perform the same function. 1

Figs. 14 and. 15 show a still further modification of the projection shown in Figs. 10, 11 and 12. In this modification, the vertically extending portions 2 !"v of the depressions or recesses are notched as at 28 so that it will not be necessary for the spring to be flexed as much as with the device shown in Fig. 10, thereby lengthening the useful service of the spring. However, the springs ride over the projections 24" the same as in Figs. '10, 11 and 12, so that when the spring is arranged between the projections 24", rotation of the top will be prevented except when a considerable force is applied thereto.

When using tops such as shown in Figs. 10, 11, 12, 13, 14 and 15 it is necessary to use a bayonet slot 1 which is wide enough to enable the projection to pass through the rim portion 2.

A still further modification of my invention is shown in Figs. 17 and 18 in which a separate ring is used for the purpose of adapting a top constructed according toiny invention to a lid of the ordinary construction. The arrangement is somewhat the same as shown in Fig. 8, except in this instance the ring 29 is substantially L-shaped in cross-section, and is practically a solid ring and does not have the spring fingers 2| shown in Fig. 8. The upper portion of the ring has a flat annular portion 38 which abuts against the lower side of the cover i The ring is provided with an upwardly and inwardly extending flat annular flange 3! which is notched at 32 so that the ring may be slipped over the top from beneath, notches 532 being for the purpose of receiving the projections 5 and 9. The ring is inserted from beneath and is then rotated. The flange 35 is slitted peripherally at 33 for a short distance so as to form spring tongues 34. The flange 35 and ring 29 are resilient and therefore when the flange 3U abuts against the underside of the lid 1, the flange 3! will be forced against the upper sloping surfaces of the projections 9 to prevent separation of the top and cover in substantially the same manner as the ring 22 and spring fingers 2! prevent this separation in Figs. 8, 9 and 10.

In Fig. 19, I show an arrangement such as in Figs. 17 and 18 but with the flange 30, recesses 32 and slits 33 omitted. Since there is no flange on the ring 29, the ring may be forced out of round by pressing the opposite sides toward each other. The dimension of the ring in one direction is thereby increased to such an extent as to permit the ring to be slipped over the flange 5 and projections 6 and 9 with ease. When the ring again contracts the flange 3i resumes its circular shape and grips the upper sloping surfaces of projections 9 therebetween.

The edge of the flange 3| is serrated as at 35 so that the serrations will position themselves over the projections 9 and prevent rotation of the ring relative to the projections. While with this modification, it is not absolutely necessary that the ring be prevented from rotation relatively to the lid I, I may if I so desire, provide the upper edge of the ring with a bayonet slot to fit over the bayonet slot ordinarily provided on the cover and in a manner similar to that illustrated in Figs. 3 and 4 and. also 8, 9 and 10.

While I have shown a number of modified arrangements for my invention, it will readily be seen that all of these forms embody substantially the same basic principle, namely, the provision of a projection which has a downwardly and. outwardly sloping surface, a lid which has a relatively long spring for engaging the sloping surface at a point remote from the flange on the lid and egooaess additional sloping surfaces for engaging portions of the springtofiprevent'relative rotation between the top and the lid.

Obviously other changes may" be made in-the construction and in the arrangement of parts without departing from the spirit of this invention, and I do not wish to be limited except as set forth in the appended claims.

Having thus described several modifications of Izzy-invention, what Idesire to secure by Letters Patent of the United-Statesis: V

1. In a percolator cover, the combination with a lid having an opening therein, of a glass top for said lid having a portion adapted to bearranged within said opening, a projection on said top for engaging the edge of said opening to resist withdrawal of said top from said lid, a second projectionon said top spaced from said first projection in a direction away from the edge ofsaid opening, and a spring oo-operating with said lid and said top andresiliently engaging saidsecond projectionto hold said top firmly within said opening and-thereby prevent rattling thereof while permitting unequal expansion and contraction of said top and lid.

2. In a percolator cover, the combination wit a lid having an opening therein, of a glass top for said lid having aportion adapted to be arranged within said opening, a projection on said top for engaging the edge of :said opening to resist withdrawal of said top from said opening in said lid, a second projection on-said top spaced from said first projection in a direction away from the edgeof said opening, and a'spring cooperating With said lid and top for resiliently engaging saidsecond projection to hold saidtop firmly within said opening to prevent rattling thereof while permitting unequal expansion and contraction of said top and lid, said spring also having means thereon co-operating with means on said top for resisting rotating of said top in said lid. Y

3. In a percolator cover, the combination with a lid having an -opening therein, of-a glass top having an apron extending into said opening,

means on said top for limiting movement of said top into said opening by engagement with said lid adjacent said opening, an abutment surface on said apron having the operative suriacethereof spaced a substantial amount from theedge of resist relative rotation between said top and lid while said top is arranged within said opening.

4. A percolator coverv comprising a lid having an opening therein, a flange depending from said lid and surrounding said opening, a glass top hav ing a portion thereof extendinginto said opening and projecting beyond said flangeat both sides thereof, means on said top for engaging means on one side of said lid for limiting movement of v said flange into said opening,aprojection on said top-for engaging the edge of said flange on the other side of said lid to prevent withdrawal of said top from said opening while said top, and lid are in one position of rotativeadjustment, said flange havinga recessed portion therein arranged in the direction of the axis of said open said opening, a second projection arranged on said percolator topand spaced "from said'fiange in a direction'below the plane'through the lower operative-edge of said flange when said top is within said opening, and spring means onsaid lid-*having yielding engagement with said second projection and being shaped toclear said first projection when said top is rotatedwithin said opening. I

5; In a percolator cover; the'combination with a lid having an opening therein, of a glasstop havingan apron thereon projecting through said opening "to position one portion of said apron below saidlid, a projection on saida'pronspaced a substantialamount irom the edge of-said opening, a ring surrounding said apron between said of said spring fingerwith said projection, and

said spring finger preventing rattling of said topin said opening due to its yielding engagement with said projection, anda second projection on said top for engaging the lid toresist removal of said top fromsaid opening.

6. A:percolator cover, comprising a lid having an opening therein, a ring fitting within said opening and having portions engaging the edge of said opening and overlying theadjacent surfaces of said lid to retain said ring in saidtopem ing, spring fingers on saidring, a glass top fitted within said ring, projections on said'top remote iromsaid ring and being adapted to 'engagesaid spring fingers when in one position :of .rotative adjustmentwithin said ring, said spring fingers having means thereonto prevent removal ofsaid top from said opening while permitting relative expansion between said top and lid and relative expansion between said spring fingers and top, and a second projection independenttof said first arranged within said opening andlhaving a portion-projecting below said flange a sloping surface on said portion, slopingin a direction "downwardly andoutwardly away from-said flange, a spring abutting against said. lid and said I sloping surface, and yieldingly urged in a direction toward the axis of said top for preventing removallof said top from said opening but permittingrelative expansion of said top and said lid without destroying the operativeengag'ement of said spring with said sloping surface, saidslop-' ingfsurfa'ce being arranged at a .point remote from the adjacent portion of said flange, and an abutment thereon separate from said "sloping surface to engage said lid for preventingremoval of saiditop from said opening while the spring is in engagement with said sloping surface.

8. A glass percolator top comprising a mem- 5 her having a substantially cylindrical flange and,

two projections thereon substantiallyin alignment with each other in the, direction of the axis of the cylindrical flange,:-eachprojection being adapted, to co-operate, with difierent zretaining means for holding said 'top within an opening in a percolator lid.

9. A glass percolator top comprising a member having a cylindrical flange adapted to fit in a circular opening in a percolator lid, a projection on said flange for preventing removal of said top from said opening by its engagement with the edge of said opening and arranged so as to lie in close proximity to said edge when said top is in said opening, and an abutment on said top adapted to lie at a substantial distance from the edge of said lid surrounding said opening when said top is in said opening, said last mentioned abutment being adapted to be engaged by resilient means on said lid to prevent rattling of said top in said opening regardless of whether said top fits snugly within said opening or not.

10. In a percolator cover, the combination with a lid having an opening therein, of a glass tophaving a cylindrical portion arranged within said opening, a projection on said top spaced a substantial distance from the portion of said lid adjacent said opening, a removable ring having a spring finger thereon, interposed between said projection and said lid with said spring finger engaging said projection and said ring engaging said lid, and a second projection on said top adapted to co-operate with the edge of said opening for preventing removal of said top from said opening, independently of said first projection and spring finger, while said top is in one position of rotative adjustment within said opening.

11. A percolator cover comprising a lid having an opening therein, of a ring having a portion for gripping the edge of said lid which surrounds said opening, a glass top having a flange arranged within said ring, a projection on said top remote from said lid, a second projection on said top adjacent said lid and adapted to cooperate therewith for preventing removal of said top from said opening, and a spring finger on said ring engaging said first projection.

12. In a percolator cover, the combination with a. lid having an opening therein, of a glass top fitting within said opening, a projection on said top, a ring separate from said lid and top and arranged between said lid and projection,

; said ring having a rim portion adjacent said projection for engaging said projection and resiliently forcing said projection in a direction away from said lid so that said top is resiliently held in said opening.

13. In a percolator cover, the combination with a'lid having an opening therein, of a glass ,depression to engage said walls and abutting against the underside of said lid.

14. A percolator top comprising a body portion having a depending flange, and a projection on said flange substantially in the form of a one- -half section of a right circular conewith the apex extending toward the main body of said top.

15. In a percolator cover, the combination with a lid having an opening therein, of a glass top having a flange arranged within said opening, a

bead on said top for 'preventing'the movement of said-top through said opening in one direction, a bayonet joint between said top and lid comprising a projection on said top and a recess in said lid, a second projection on said top, and a spring means for engaging said second projection and lid for preventing removal of said top from said lid, said spring means comprising a substantially ri id ring having a spring finger thereon adapted to engage said second projection and the underside of said lid, said ring being entirely free and separate from said top and lid and being held in operative relation with said top and lid only when said top is within said opening.

16. In a percolator cover, the combination with a lid having an opening therein, of a glass top having a depending flange, a projection on said flange, a ringhaving spring fingers thereon cooperating with the underside of said lid and with said projection for holding said top within said opening, said ring with said spring fingers being held in operative relation with said lid solely by the reaction between the same and said projection and lid, and being freely and bodily removable from said lid when said top is removed from said opening.

17. In a percolator top, the combination with a lid having an opening therein, of a substantially rigid ring engaging the underside of said lid, a

top having a depending flange arranged within said opening, a plurality of projections spaced peripherally about said flange, and spring fingers carried by said ring for engaging said projections to hold said top within said opening and resist rotation of said top within said opening, said ring being wholly unconnected with said lid.

18. A device as claimed in claim 17 in which additional projections are provided spaced about the periphery of said flange for engaging the edge of said opening to prevent withdrawal of said top from said opening while said spring fingers are in engagement with said first mentioned projections.

19. In a percolator cover, the combination with a lid having an opening therein, of a glass top having a portion arranged within said opening, a bead for limiting the movement of said top into said opening, a bayonet slot in said lid at the edge of said opening, a projection on said top adapted to pass through said slot, and upon rotation of said top within said opening prevent the withdrawal of said top from said opening, a ring having a bayonet slot therein for the reception of said projection to enable said ring to be arranged about said top between said lid and said projection, said ring having spring means thereon for co-operation with said projection and lid when said ring is rotated after said projection has passed through said slot in said ring to there by hold said top within said opening.

20. In a percolator cover, the combination with a glass top, of a lid having an opening therein, a depending flange on said top arranged within said opening, means on said top for limiting the movement of said top into said opening, a pair of projections on said flange spaced peripherally about said flange, a substantially continuous ring surrounding said flange and having an inwardly extending rim portion provided with a plurality of serrations so that as said ring is inserted over said flange and projections, and arranged between said projections and lid, the ring may be rotated to bring said projections into said serrations and prevent rotative movement of said ring relative to said flange in a peripheral direction andthe removal of said top from saidopening.

21. A glass top for percolators comprising a bead on said top for limiting the movement of saidtop into the opening provided in the lid of a percolator, and a flange adapted to be arranged within said opening, of a peripheral projection on said flange and spaced from said bead, and

. in a direction toward said bead and the outer conical surfaces facing said bead.

23. A device as set forth in claim 21 in which the lower base portion of said conical projection has an outwardly extending shoulder at substantially right angles to the axis of said top.

24. A percolator top comprising a body portion having a bead thereon and a flange depending from said body portion and spaced inwardly from said bead, and a projection extending outwardly from said flange and provided with a recess therein for the reception of a holding means.

25. A glass percolator top having 'a substantially cylindrical apron arranged to fit into the opening of a percolator lid, a head on said top to limit movement of said apron into said lid, said apron being provided with two spaced aligned projections one above the other.

26. A glass percolator top having a substantially cylindrical apron arranged to fit into the opening in a percolator lid, a bead on said top to limit the movement of said apron into said lid, said apron having a projection provided with an intermediate recess thus forming, in eifect, two raised portions.

27. A glass percolato-r top having a substantially cylindrical apron arranged to fit into a percolator cover, a head on said top to limit the movement of said apron into said lid, said apron being provided with two aligned projections one above the other, the lower projection being provided with a laterally extending retaining extension.

28. A glass percolator top having a substantially cylindrical apron arranged to fit into a percolator lid, a bead on said top for limiting the movement of said apron into said lid, said apron having a projection provided with an intermediate recess thus forming, in effect, two raised portions, the lower raised portion being provided with a laterally extending retaining extension.

29. A glass percolator top having a substantially cylindrical apron arranged to fit into a percolator lid, a head on said top to limit the movement of said apron into said lid, said apronbeing provided with two aligned projections one above the other, the face of the lower projection being wedge shaped.

30. A glass top comprising a member having a cylindrical portion, limiting means adjacent said portion, a projection on said portion and located in spaced relation from said limiting means, and a second projection on said portion,

having a wedge shaped face opposed to said limiting means.

31. A container lid having an opening therein, a. glass top having a portion fitting into said opening, means for limiting the movement'of said top into said opening, a projection on said top portion spaced from said limiting means and adjacent said lid, a second projection of wedge shape on said portion with the face thereof opposed to said limiting means, and resilient means coacting with said face and said lid to hold said top connected to said lid.

32. A percolator top comprisinga body portion having a limiting bead thereon, an apron depending from said body portion and spaced inwardly from said bead, and a projection extending outwardly from said apron and provided with a recess therein for the reception of a resilient holding means, and provided with a wedge-shaped portion the axis of which is parallel withthe axis of the top andthe apex of which is upwardly disposedin relation to the remainder of the wedge.

33. A container lid having an opening therein, a glass top having a portion fitting into said opening, means for limiting the movement of said top into said opening, a projection on said portion and spaced from said limiting means in position to engage the lid, a second projection on said portion, wedge shape, with the face thereof opposed to said limiting means, and resilient means having tongues thereon to contact said wedge shape projection for resisting rotation of said top and lid.

34. A container lid having an opening therein, a glass top having an apron portion fitting into said opening, means for limiting the movement of said portion into said opening, a projection on said portion and located away from said limiting means and adjacent said lid, a second wedge shape projection on said portion, and a spring means, said spring means shaped to extend above and past said first projection and yieldingly engage the wedge shape projection when said top is turned in said cover. i

35. A container lid having an opening therein, a glass top having an apron portionfitting into said opening, means for limiting the movement of said portion into said opening, a projection on said portion located away from said limiting means and adjacent said lid, a second projection, wedge shape, on said portion, and an annular resilient ring, angle-shaped in cross-section, arranged to contact with the wedge shape projection to hold said top and lid together.

36. A ring, angle shaped in cross-section, hav ing portions for contacting a percolator cover and also the face of a wedge shape projection on a percolator top for the lid of a percolator cover, said portion being a tongue for resiliently contacting the wedge shape projection, and one of said contacting portions also having serrations thereon.

37. A ring comprising a body portion of resilient material, resilient fingers extending therefrom and arranged to contact the lower of two vertically aligned projectionson a percolator top.

38. A container lid having an opening therein, a glass top positioned in said opening, said top having a limiting bead, an apron extending downward from said limiting bead, and said apron having two spaced projections one above the other, and a ring with spring fingers contacting only the lower of said projections.

39. A container lid having an opening therein, a glass top, having a limiting bead thereon, positioned in said opening, an apron extending downward from said limiting bead having two spaced projections one above the other, and spring means on said lid adaptedto' contact only the lower one of said projections.

40. A container lid having an opening therein, a glass top having an apron portion fitting into said opening, means for limiting the movement of said apron into said opening, two spaced projections on said apron one above the other in a direction away from the said limiting means, and a ring having spring fingers contacting only the lower one of said projections.

41. A container lid having an opening therein, a glass top having an apron portion fitting into said opening, means for limiting the movement of said apron into said opening, two spaced projections one above the other on said apron in a direction away from said limiting means, and spring fingers on said lid contacting only the lower one of said projections.

42. A cylindrical ring having an inturned resilient flange the edge of which is serrated.

43. A percolator top having a body portion, a raised limiting bead thereon, an apron extending from said limiting bead in a downward direction and being adapted to be arranged in an opening in a percolator cover, said apron having a projection provided with an intermediate recess thus forming, in efiect, two raised portions.

44. A percolator top comprising a body portion, an apron extending from said body portion in a downward direction and being provided with two raised projections, the lower projection being provided with an extending retaining extension.

EMIEL P. SEGI-IERS. 

